h1 {
  width: 100%;
  font-size: .44rem;
  border-bottom: 1px solid #000;
  color: #555;
}

.exam {
  padding: .2rem;
  box-sizing: border-box;
}

.exam h2 {
  color: red;
}

.exam h4 {
  margin: .4rem 0;
}

.exam .item {
  margin: .2rem 0;
  display: flex;
  justify-content: space-around;
  transition: all ease-in .2s;
}

.exam .item span:nth-child(1) {
  width: 1rem;
  height: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  border: solid 1px;
  border-radius: 50%;
}

.exam .item span:nth-child(2) {
  width: calc(100% - 1rem);
  height: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.exam .item.active {
  background-color: red;
}
